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                    4.3 目标规划
            
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                    4.5 动态规划
            
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                    4.6 排队论
            
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                    4.7 博弈论
            
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                    1.1 策略模式
            
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                    1.2 原型模式
            
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                    1.5 桥接模式
            
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                    1.6 组合模式
            
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                    1.7 门面模式
            
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                    1.8 适配器模式
            
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                    1.9 装饰者模式
            
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                    1.10 享元模式
            
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                    1.11 代理模式
            
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                    1.12 中间件模式
            
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                    2.1 长连接
            
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                    2.2 MQ
            
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                    3.1.1 原理及构成
            
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                    3.1.2 异步机制
            
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                    3.1.3 一些核心概念
            
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                    3.1.4 web应用: koa框架
            
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                    3.1.5 koa源码分析
            
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                    3.1.6 libuv网络库应用
            
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                    3.1.7 性能调优
            
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                    3.1.8 其他: Node爬虫
            
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                    3.1.9 其他: Node编写Mapreduce
            
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                    3.2 C/C++
            
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                    3.2.1 面向对象
            
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                    3.2.2 进程通信
            
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                    3.2.3 线程管理
            
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                    3.2.4 内存管理
            
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                    3.2.5 网络编程
            
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                    3.2.6 构建工具
            
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                    3.2.7 其他: 线程池
            
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        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4" data-path="../../engineering/ci_deplopment/">
            
                <a href="../../engineering/ci_deplopment/">
            
                    
                    三 搭建部署
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1" data-path="../../engineering/ci_deplopment/test.html">
            
                <a href="../../engineering/ci_deplopment/test.html">
            
                    
                    3.1 测试
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.1.1" data-path="../../engineering/ci_deplopment/test/unit_testing.html">
            
                <a href="../../engineering/ci_deplopment/test/unit_testing.html">
            
                    
                    3.1.1 单元测试
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.1.2" data-path="../../engineering/ci_deplopment/test/stress_testing.html">
            
                <a href="../../engineering/ci_deplopment/test/stress_testing.html">
            
                    
                    3.1.2 压力测试
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.2" data-path="../../engineering/ci_deplopment/ci_readme.html">
            
                <a href="../../engineering/ci_deplopment/ci_readme.html">
            
                    
                    3.2 集成
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.2.1" data-path="../../engineering/ci_deplopment/ci/gitlab_ci.html">
            
                <a href="../../engineering/ci_deplopment/ci/gitlab_ci.html">
            
                    
                    3.2.1 GitLab CI
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.2.2" data-path="../../engineering/ci_deplopment/ci/spinnaker.html">
            
                <a href="../../engineering/ci_deplopment/ci/spinnaker.html">
            
                    
                    3.2.2 Spinnaker
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.3" data-path="../../engineering/ci_deplopment/build.html">
            
                <a href="../../engineering/ci_deplopment/build.html">
            
                    
                    3.3 部署
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.3.1" data-path="../../engineering/ci_deplopment/k8s/k8s.html">
            
                <a href="../../engineering/ci_deplopment/k8s/k8s.html">
            
                    
                    3.3.1 k8s
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.3.2" data-path="../../engineering/ci_deplopment/rancher/rancher.html">
            
                <a href="../../engineering/ci_deplopment/rancher/rancher.html">
            
                    
                    3.3.2 rancher
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.3.3" data-path="../../engineering/ci_deplopment/swarm/swarm.html">
            
                <a href="../../engineering/ci_deplopment/swarm/swarm.html">
            
                    
                    3.3.3 swarm
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.4" data-path="../../engineering/ci_deplopment/maintenance.html">
            
                <a href="../../engineering/ci_deplopment/maintenance.html">
            
                    
                    3.4 监控
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.4.1" data-path="../../engineering/ci_deplopment/monitor.html">
            
                <a href="../../engineering/ci_deplopment/monitor.html">
            
                    
                    3.4.1 容器监控
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.4.2" data-path="../../engineering/ci_deplopment/trace.html">
            
                <a href="../../engineering/ci_deplopment/trace.html">
            
                    
                    3.4.2 系统监控
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.4.3" data-path="../../engineering/ci_deplopment/app1.md">
            
                <span>
            
                    
                    3.4.2 应用监控
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.5" data-path="../../engineering/ha/ha.html">
            
                <a href="../../engineering/ha/ha.html">
            
                    
                    3.5 高可用
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.5.1" data-path="../../engineering/ha/client.html">
            
                <a href="../../engineering/ha/client.html">
            
                    
                    3.5.1 接入层高可用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.5.2" data-path="../../engineering/ha/service.html">
            
                <a href="../../engineering/ha/service.html">
            
                    
                    3.5.2 服务层高可用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.5.3" data-path="../../engineering/ha/share.html">
            
                <a href="../../engineering/ha/share.html">
            
                    
                    3.5.3 存储层高可用
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.4.6" data-path="../../engineering/ci_deplopment/hc/hc.html">
            
                <a href="../../engineering/ci_deplopment/hc/hc.html">
            
                    
                    3.6 高并发
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.4.6.1" data-path="../../engineering/ci_deplopment/hc/dns.html">
            
                <a href="../../engineering/ci_deplopment/hc/dns.html">
            
                    
                    3.6.1 基于DNS的负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6.2" data-path="../../engineering/ci_deplopment/hc/lvs.html">
            
                <a href="../../engineering/ci_deplopment/hc/lvs.html">
            
                    
                    3.6.2 基于Lvs的负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.4.6.3" data-path="../../engineering/ci_deplopment/hc/haproxy.html">
            
                <a href="../../engineering/ci_deplopment/hc/haproxy.html">
            
                    
                    3.6.3 基于haproxy的负载均衡
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5" >
            
                <span>
            
                    
                    四 架构模式
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1" >
            
                <span>
            
                    
                    1 微服务架构设计与实践
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.1.1" data-path="../java/spring-cloud.html">
            
                <a href="../java/spring-cloud.html">
            
                    
                    1.1 微服务概况
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.2" data-path="../java/spring-eureka.html">
            
                <a href="../java/spring-eureka.html">
            
                    
                    1.2 服务注册及发现
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.3" data-path="../java/spring-feign.html">
            
                <a href="../java/spring-feign.html">
            
                    
                    1.3 服务调用
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.4" data-path="../java/spring-zuul.html">
            
                <a href="../java/spring-zuul.html">
            
                    
                    1.4 网关及负载均衡
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.5" data-path="../java/spring-hystrix.html">
            
                <a href="../java/spring-hystrix.html">
            
                    
                    1.5 熔断、限流、扩缩容
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.6" data-path="../java/spring-config.html">
            
                <a href="../java/spring-config.html">
            
                    
                    1.6 云配置中心
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.7" data-path="../java/zipkin-tracing.html">
            
                <a href="../java/zipkin-tracing.html">
            
                    
                    1.7 分布式链路追踪
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.1.8" data-path="../java/swagger.html">
            
                <a href="../java/swagger.html">
            
                    
                    1.8 接口文档管理
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5.2" data-path="../../domain/">
            
                <a href="../../domain/">
            
                    
                    2 领域驱动模型
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.2.1" data-path="../../domain/domain.html">
            
                <a href="../../domain/domain.html">
            
                    
                    2.1 领域--Domain
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.2" data-path="../../domain/entity.md">
            
                <span>
            
                    
                    2.2 领域实体--Entity
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.3" data-path="../../domain/object.html">
            
                <a href="../../domain/object.html">
            
                    
                    2.3 值对象--Value Object
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.4" data-path="../../domain/aggregate.html">
            
                <a href="../../domain/aggregate.html">
            
                    
                    2.4 聚合--Aggregate
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.5" data-path="../../domain/service.html">
            
                <a href="../../domain/service.html">
            
                    
                    2.5 服务--Services
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.6" data-path="../../domain/event.html">
            
                <a href="../../domain/event.html">
            
                    
                    2.6 领域事件--Event
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.2.7" data-path="../../domain/framework.html">
            
                <a href="../../domain/framework.html">
            
                    
                    2.7 几种常见的DDD架构
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.5.3" >
            
                <span>
            
                    
                    3 架构技术的演化与趋势
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.5.3.1" >
            
                <span>
            
                    
                    3.1 架构技术的发展历史及现状
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3.2" >
            
                <span>
            
                    
                    3.2 Serverless无服务架构概念
            
                </span>
            

            
        </li>
    
        <li class="chapter " data-level="1.5.3.3" >
            
                <span>
            
                    
                    3.3 ServerMesh网格服务概念
            
                </span>
            

            
        </li>
    

            </ul>
            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.6" >
            
                <span>
            
                    
                    五 其他
            
                </span>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.6.1" data-path="../../story/talk.html">
            
                <a href="../../story/talk.html">
            
                    
                    5.1 小伙子,放松!
            
                </a>
            

            
        </li>
    

            </ul>
            
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                                <h3 id="&#x4E00;&#x3001;&#x7B80;&#x4ECB;">&#x4E00;&#x3001;&#x7B80;&#x4ECB;</h3>
<ul>
<li>1.1 &#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x5185;&#x5B58;&#x5206;&#x914D;&#x53CA;&#x56DE;&#x6536;</li>
</ul>
<p>&#xA0;&#xA0;&#xA0;&#xA0;Linux&#x5185;&#x6838;&#x628A;&#x865A;&#x62DF;&#x5730;&#x5740;&#x7A7A;&#x95F4;&#x5206;&#x4E3A;&#x4E24;&#x90E8;&#x5206;&#xFF1A;&#x7528;&#x6237;&#x8FDB;&#x7A0B;&#x7A7A;&#x95F4;&#xFF0C;&#x5185;&#x6838;&#x8FDB;&#x7A0B;&#x7A7A;&#x95F4;&#xFF0C;&#x5728;&#x5185;&#x5B58;&#x7BA1;&#x7406;&#x65F6;&#xFF0C;&#x9875;&#x662F;&#x5730;&#x5740;&#x7A7A;&#x95F4;&#x7684;&#x6700;&#x5C0F;&#x5355;&#x4F4D;&#xFF0C;&#x901A;&#x5E38;&#x5728;32&#x4F4D;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x4E2D;&#x5927;&#x5C0F;&#x4E3A;4KB&#xFF0C;64&#x4F4D;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x4E2D;&#x4E3A;8KB&#xFF0C;&#x8FDB;&#x7A0B;&#x6267;&#x884C;&#x65F6;&#x5E76;&#x975E;&#x4E00;&#x6B21;&#x6027;&#x5C06;&#x5168;&#x90E8;&#x78C1;&#x76D8;&#x6587;&#x4EF6;&#x52A0;&#x8F7D;&#x5230;&#x5185;&#x5B58;&#xFF0C;&#x800C;&#x662F;&#x6839;&#x636E;&#x5C40;&#x90E8;&#x6027;&#x539F;&#x7406;&#xFF0C;&#x5C06;&#x4E00;&#x90E8;&#x5206;&#x78C1;&#x76D8;&#x6587;&#x4EF6;&#x6682;&#x9A7B;&#x5185;&#x5B58;&#xFF0C;&#x5F53;&#x51FA;&#x73B0;&#x7F3A;&#x9875;&#x5F02;&#x5E38;&#x9700;&#x8981;&#x9875;&#x9762;&#x8C03;&#x5EA6;&#x65F6;&#xFF0C;&#x518D;&#x6839;&#x636E;&#x9875;&#x8868;&#x548C;&#x66FF;&#x6362;&#x7B97;&#x6CD5;&#x5C06;&#x78C1;&#x76D8;&#x6587;&#x4EF6;&#x4E0E;&#x4E3B;&#x5B58;&#x4E2D;&#x9875;&#x8FDB;&#x884C;&#x66FF;&#x6362;&#xFF0C;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x4E3A;&#x8FDB;&#x7A0B;&#x5206;&#x914D;&#x5185;&#x5B58;&#x7531;brk&#xFF0C;mmap&#xFF0C;munmap&#x7B49;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#x5B9E;&#x73B0;&#x3002;</p>
<p>&#xA0;&#xA0;&#xA0;&#xA0;&#x5728;Linux&#x7CFB;&#x7EDF;&#x4E0A;&#xFF0C;&#x7A0B;&#x5E8F;&#x88AB;&#x8F7D;&#x5165;&#x5185;&#x5B58;&#x65F6;&#xFF0C;&#x5185;&#x6838;&#x4E3A;&#x7528;&#x6237;&#x8FDB;&#x7A0B;&#x5730;&#x5740;&#x7A7A;&#x95F4;&#x5EFA;&#x7ACB;&#x4E86;&#x4EE3;&#x7801;&#x6BB5;&#x3001;&#x6570;&#x636E;&#x6BB5;&#x548C;&#x5806;&#x6808;&#x6BB5;&#xFF0C;&#x5728;&#x6570;&#x636E;&#x6BB5;&#x4E0E;&#x5806;&#x6808;&#x6BB5;&#x4E4B;&#x95F4;&#x7684;&#x7A7A;&#x95F2;&#x533A;&#x57DF;&#x7528;&#x4E8E;&#x52A8;&#x6001;&#x5185;&#x5B58;&#x5206;&#x914D;&#xFF0C;&#x5982;&#x4E0B;&#x56FE;&#xFF0C;&#x8BE6;&#x7EC6;&#x89E3;&#x8BFB;&#x8BF7;&#x53C2;&#x8003;&lt;&#x6DF1;&#x5165;&#x7406;&#x89E3;&#x8BA1;&#x7B97;&#x673A;&#x7CFB;&#x7EDF;&gt;&#x3002;</p>
<p><img src="http://cdn.find-world.top/memrory_1.png" alt="&#x7ED3;&#x679C;&#x67E5;&#x770B;"></p>
<ul>
<li>1.2 glibc&#x8FD0;&#x884C;&#x5E93;&#x5185;&#x5B58;&#x5206;&#x914D;&#x53CA;&#x56DE;&#x6536;</li>
</ul>
<p>&#xA0;&#xA0;&#xA0;&#xA0;linux&#x4E0B;&#x7A0B;&#x5E8F;&#x672C;&#x8EAB;&#x7684;&#x5185;&#x5B58;&#x7533;&#x8BF7;&#x548C;&#x91CA;&#x653E;&#x4E0D;&#x4F1A;&#x76F4;&#x63A5;&#x8FDB;&#x884C;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#xFF0C;&#x901A;&#x5E38;&#x662F;&#x6839;&#x636E;glibc&#x8FD0;&#x884C;&#x5E93;calloc, free, malloc, realloc, reallocf, valloc&#x7B49;&#x4E0E;&#x5185;&#x6838;&#x4EA4;&#x4E92;&#xFF0C;glibc&#x4F5C;&#x4E3A;c&#x8FD0;&#x884C;&#x5E93;&#x5DF2;&#x7ECF;&#x6210;&#x4E3A;linux&#x4E0B;&#x7684;&#x4E8B;&#x5B9E;&#x6807;&#x51C6;&#xFF0C;&#x81F3;&#x4E8E;&#x7A0B;&#x5E8F;&#x672C;&#x8EAB;&#x4E3A;&#x4F55;&#x4E0D;&#x76F4;&#x63A5;&#x4EE5;&#x7CFB;&#x7EDF;&#x8C03;&#x7528;&#x5F62;&#x5F0F;&#x8FDB;&#x884C;&#x5185;&#x5B58;&#x7533;&#x8BF7;&#xFF1F;&#x53EF;&#x4EE5;&#x770B;&#x5230;&#x4E00;&#x4E2A;&#x91CD;&#x8981;&#x539F;&#x56E0;&#x662F;&#x7BA1;&#x7406;&#x7684;&#x5355;&#x4F4D;&#x4E0D;&#x540C;(&#x67E5;&#x8BE2;&#x9875;&#x8868;&#x3001;&#x865A;&#x62DF;&#x5185;&#x5B58;&#x6620;&#x5C04;&#x7269;&#x7406;&#x5185;&#x5B58;&#x7B49;&#x4E5F;&#x662F;&#x5176;&#x539F;&#x56E0;)&#xFF0C;&#x82E5;C++&#x7A0B;&#x5E8F;&#x6BCF;&#x6B21;new&#x4E00;&#x4E2A;1KB&#x7684;&#x5BF9;&#x8C61;&#x90FD;&#x8981;&#x5411;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x7533;&#x8BF7;4KB&#x7684;&#x5185;&#x5B58;&#x663E;&#x7136;&#x4F1A;&#x9020;&#x6210;&#x5927;&#x91CF;&#x7684;&#x5185;&#x5B58;&#x6D6A;&#x8D39;&#x548C;&#x788E;&#x7247;&#x3002;glibc&#x7684;&#x5185;&#x5B58;&#x7533;&#x8BF7;&#x548C;&#x91CA;&#x653E;&#x8FC7;&#x7A0B;&#x5982;&#x4E0B;&#x56FE;&#xFF0C;&#x8BE6;&#x7EC6;&#x89E3;&#x8BFB;&#x8BF7;&#x53C2;&#x8003;<a href="hhttp://www.valleytalk.org/wp-content/uploads/2015/02/glibc%E5%86%85%E5%AD%98%E7%AE%A1%E7%90%86ptmalloc%E6%BA%90%E4%BB%A3%E7%A0%81%E5%88%86%E6%9E%901.pdf" target="_blank">gblic&#x5185;&#x5B58;&#x7BA1;&#x7406;</a>:</p>
<p><img src="http://cdn.find-world.top/memrory_2.png" alt="&#x7ED3;&#x679C;&#x67E5;&#x770B;"></p>
<h3 id="&#x4E8C;&#x3001;&#x5E94;&#x7528;">&#x4E8C;&#x3001;&#x5E94;&#x7528;</h3>
<ul>
<li>2.1 &#x5185;&#x5B58;&#x6C60;&#x8BBE;&#x8BA1;</li>
</ul>
<pre><code class="lang-c++"><span class="hljs-meta">#<span class="hljs-meta-keyword">ifndef</span> __SRC_UTILS_LRUCACHE_H__</span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">define</span> __SRC_UTILS_LRUCACHE_H__</span>

<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;boost/pool/object_pool.hpp&gt;</span></span>
<span class="hljs-meta">#<span class="hljs-meta-keyword">include</span> <span class="hljs-meta-string">&lt;iostream&gt;</span></span>

<span class="hljs-keyword">class</span> Demo {

  <span class="hljs-keyword">public</span>:
    <span class="hljs-keyword">int</span> a, b;

    Demo(<span class="hljs-keyword">int</span> x = <span class="hljs-number">1</span>, <span class="hljs-keyword">int</span> y = <span class="hljs-number">2</span>) : a(x), b(y) {};

};

<span class="hljs-meta">#<span class="hljs-meta-keyword">endif</span></span>

<span class="hljs-keyword">using</span> <span class="hljs-keyword">namespace</span> <span class="hljs-built_in">std</span>;
<span class="hljs-keyword">using</span> <span class="hljs-keyword">namespace</span> boost;

<span class="hljs-function"><span class="hljs-keyword">int</span> <span class="hljs-title">main</span><span class="hljs-params">()</span> </span>{
  object_pool&lt;Demo&gt; p1;

  Demo * p = p1.<span class="hljs-built_in">malloc</span>();

  <span class="hljs-built_in">cout</span> &lt;&lt; p1.is_from(p) &lt;&lt; <span class="hljs-built_in">endl</span>;

  <span class="hljs-built_in">cout</span> &lt;&lt; (p-&gt;a != <span class="hljs-number">1</span>) &lt;&lt; <span class="hljs-string">&quot;  &quot;</span> &lt;&lt; (p-&gt;b != <span class="hljs-number">2</span>) &lt;&lt; <span class="hljs-built_in">endl</span>;

  Demo * pa = p1.construct(<span class="hljs-number">4</span>, <span class="hljs-number">5</span>);

  <span class="hljs-built_in">cout</span> &lt;&lt; (pa-&gt;a == <span class="hljs-number">4</span> &amp;&amp; pa-&gt;b == <span class="hljs-number">5</span>) &lt;&lt; <span class="hljs-built_in">endl</span>;

  p1.destroy(p);

  <span class="hljs-built_in">cout</span> &lt;&lt; p1.is_from(p) &lt;&lt; <span class="hljs-built_in">endl</span>;
}
</code></pre>
<ul>
<li>2.2 &#x7F13;&#x5B58;&#x8BBE;&#x8BA1;</li>
</ul>
<pre><code class="lang-c++">#ifndef __SRC_UTILS_LRUCACHE_H__
#define __SRC_UTILS_LRUCACHE_H__

#include &lt;list&gt;
#include &quot;define.h&quot;

namespace Utils {

template &lt;typename Key, typename Value&gt;

  class LRUCache {

    public:

      typedef Key key_type;
      typedef Value value_type;
      typedef size_t size_type;

    public:
      explicit LRUCache(size_type capacity) //explicit
          : m_Size(0),
            m_Capacity(capacity){};

      ~LRUCache() {
        this-&gt;clear();
      }

    public:
      value_type find(const key_type &amp;key) {
        HashTableIter rc = m_Table.find(key);

        if (rc == m_Table.end()) {
          return false;
        }

        Entry * entry = rc-&gt;second;
        assert(entry != NULL &amp;&amp; &quot;HashTable Entry is Invalid&quot;);

        return entry-&gt;value;
      };

      bool insert(const key_type &amp; key, const value_type &amp; value) {
        Entry * entry = NULL;

        HashTableIter rc = m_Table.find(key);

        if (rc != m_Table.end()) {
          entry = rc-&gt;second;
          assert(entry != NULL &amp;&amp; &quot;HashTable Entry is Invalid&quot;);

          entry-&gt;value = value;
          m_List.erase(entry-&gt;link);
        } else {
          entry = new Entry(key, value);

          if (entry == NULL) {
            return false;
          }

          ++m_Size;
          m_Table.insert(std::make_pair(key, entry));
        }

        m_List.push_back(entry);
        entry-&gt;link = --m_List.end();

        while (m_Size &gt; m_Capacity) {
          entry = m_List.front();
          assert(entry != NULL &amp;&amp; &quot;List::front() Error&quot;);

          this-&gt;remove(entry-&gt;key);
        }

        return true;
      }

      void remove(const key_type &amp; key) {
        Entry * entry = NULL;

        HashTableIter rc = m_Table.find(key);

        if(rc != m_Table.end()) {
          --m_Size;
          entry = rc-&gt;second;
          m_Table.erase(rc);
        }

        if(entry != NULL) {
          m_List.erase(entry-&gt;link);
          delete entry;
        }

      }

      void clear() {
        for(HashTableIter it = m_Table.begin(); it != m_Table.end(); ++it) {
          delete it-&gt;second;
        }

        m_Size = 0;
        m_List.clear();
        m_Table.clear();
      }

      inline size_type size() const { return m_Size; }
      inline size_type capacity() const { return m_Capacity; }

    private:
      struct Entry;
      typedef std::list&lt;Entry *&gt; LRUList;
      typedef typename LRUList::iterator LRUListLink;
      typedef UnorderedMap&lt;key_type, Entry *&gt; HashTable;
      typedef typename HashTable::iterator HashTableIter;
      typedef typename HashTable::const_iterator HashTableConstIter;

      struct Entry {
        Entry(key_type k, value_type v)
          : key(k),
          value(v) {}

        key_type key;
        value_type value;
        LRUListLink link;
      };

    private:
      size_type m_Size;
      size_type m_Capacity;
      LRUList m_List;
      HashTable m_Table;
  };

}

class Demo {

public:
  void operator()(int id, int year);
};

#endif

int main() {
  typedef Utils::LRUCache&lt;int, int&gt; Cache;

  Cache cache(3);

  for(int i = 1; i &lt;= 5; i++) {
    cache.insert(i, i * 5);
    printf(&quot;add cache is : %d\n&quot;, cache.find(i));
  }

  for (int i = 1; i &lt;= 5; i++) {
    cache.remove(i);
    printf(&quot;remove cache and cache size is : %lu\n&quot;, cache.size());
  }

  return 1;
}
</code></pre>
<p>&#x6253;&#x5370;&#x7ED3;&#x679C;:</p>
<pre><code class="lang-text">master:libuv-service dreamboad$ ./a.out
add cache is : 5
add cache is : 10
add cache is : 15
add cache is : 20
add cache is : 25
remove cache and cache size is : 3
remove cache and cache size is : 3
remove cache and cache size is : 2
remove cache and cache size is : 1
remove cache and cache size is : 0
</code></pre>
<ul>
<li>2.3 &#x603B;&#x7ED3;</li>
</ul>
<p>&#xA0;&#xA0;&#xA0;&#xA0;C++&#x7A0B;&#x5E8F;&#x5185;&#x5B58;&#x7BA1;&#x7406;&#x4E3B;&#x8981;&#x76EE;&#x7684;&#x662F;&#x51CF;&#x5C11;&#x5185;&#x5B58;&#x788E;&#x7247;&#x548C;&#x9632;&#x6B62;&#x5185;&#x5B58;&#x6CC4;&#x9732;&#xFF0C;&#x4ECE;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x5165;&#x624B;&#x4E86;&#x89E3;&#x6574;&#x4E2A;&#x5185;&#x5B58;&#x4F7F;&#x7528;&#x7684;&#x751F;&#x547D;&#x5468;&#x671F;&#x5C06;&#x6709;&#x52A9;&#x4E8E;&#x770B;&#x5230;&#x66F4;&#x4E3A;&#x672C;&#x8D28;&#x7684;&#x95EE;&#x9898;&#x3002;&#x9AD8;&#x6548;&#x53EF;&#x9760;&#x7684;&#x5185;&#x5B58;&#x7BA1;&#x7406;&#x9700;&#x8981;&#x5B9E;&#x8DF5;&#x9A8C;&#x8BC1;&#x548C;&#x5145;&#x5206;&#x7684;&#x5B9E;&#x9A8C;&#x7EDF;&#x8BA1;&#x6570;&#x636E;&#x4F5C;&#x4E3A;&#x652F;&#x6491;&#xFF0C;&#x901A;&#x5E38;&#x4F1A;&#x7EC4;&#x5408;&#x4EE5;&#x4E0A;&#x7684;&#x51E0;&#x79CD;&#x65B9;&#x5F0F;&#x4F5C;&#x4E3A;&#x4E00;&#x79CD;&#x6700;&#x4F73;&#x5B9E;&#x8DF5;&#xFF0C;&#x5982;&#x8457;&#x540D;&#x7684;Memcached&#x7F13;&#x5B58;&#x6570;&#x636E;&#x5E93;&#x5219;&#x662F;&#x4F7F;&#x7528;&#x9884;&#x5206;&#x914D;&#x5185;&#x5B58;&#x548C;LRU&#x6765;&#x8FDB;&#x884C;&#x5185;&#x5B58;&#x7BA1;&#x7406;&#xFF0C;&#x5176;&#x9884;&#x5206;&#x914D;&#x5F62;&#x5F0F;&#x5B9E;&#x8D28;&#x4E0A;&#x4E5F;&#x662F;&#x4E00;&#x4E2A;&#x5185;&#x5B58;&#x6C60;&#x6280;&#x672F;, &#x6B64;&#x5916;&#x4E5F;&#x53EF;&#x4EE5;&#x5229;&#x7528;gc&#x3001;&#x91CD;&#x8F7D;new/delete&#x7B49;&#x5B9E;&#x73B0;&#x5185;&#x5B58;&#x81EA;&#x52A8;&#x7BA1;&#x7406;&#x3002;</p>
<h3 id="&#x4E09;&#x3001;&#x53C2;&#x8003;">&#x4E09;&#x3001;&#x53C2;&#x8003;</h3>
<ul>
<li><a href="https://blog.csdn.net/xocoder/article/details/8759380" target="_blank">1&#x3001;stl&#x5185;&#x5B58;&#x5B9E;&#x73B0;</a></li>
<li><a href="https://blog.csdn.net/igiqoanw/article/details/27338747" target="_blank">2&#x3001;free&#x5185;&#x5B58;&#x53BB;&#x5411;</a></li>
<li><a href="https://www.cnblogs.com/ralap7/p/9184773.html" target="_blank">3&#x3001;linux&#x5185;&#x5B58;&#x53BB;&#x5411;</a></li>
<li><a href="https://www.cnblogs.com/dragon2012/p/3847966.html" target="_blank">4&#x3001;&#x5185;&#x5B58;&#x6C60;&#x53CA;&#x7BA1;&#x7406;</a></li>
<li><a href="https://www.cnblogs.com/lancidie/archive/2010/12/04/1896425.html" target="_blank">5&#x3001;new/delete&#x6548;&#x7387;</a></li>
<li><a href="http://www.gnu.org/software/libc/manual/pdf/libc.pdf" target="_blank">6&#x3001;glibc&#x5B98;&#x65B9;&#x6587;&#x6863;</a></li>
<li><a href="hhttp://www.valleytalk.org/wp-content/uploads/2015/02/glibc%E5%86%85%E5%AD%98%E7%AE%A1%E7%90%86ptmalloc%E6%BA%90%E4%BB%A3%E7%A0%81%E5%88%86%E6%9E%901.pdf" target="_blank">7&#x3001;&#x5185;&#x5B58;&#x7BA1;&#x7406;</a></li>
<li><a href="https://blog.csdn.net/think_ycx/article/details/77160286" target="_blank">8&#x3001;glibc&#x5185;&#x5B58;&#x5206;&#x914D;&#x53CA;&#x56DE;&#x6536;</a> </li>
</ul>
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